EP1201675A1 - Bisphosphites and Metal Complexes thereof - Google Patents
Bisphosphites and Metal Complexes thereof Download PDFInfo
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- EP1201675A1 EP1201675A1 EP01122420A EP01122420A EP1201675A1 EP 1201675 A1 EP1201675 A1 EP 1201675A1 EP 01122420 A EP01122420 A EP 01122420A EP 01122420 A EP01122420 A EP 01122420A EP 1201675 A1 EP1201675 A1 EP 1201675A1
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- 0 COP(O*)O*OP(Oc1c(*)c(*)c(*=C)c(*)c11)OC1=O Chemical compound COP(O*)O*OP(Oc1c(*)c(*)c(*=C)c(*)c11)OC1=O 0.000 description 3
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/09—Esters of phosphoric acids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
- C07F9/6574—Esters of oxyacids of phosphorus
- C07F9/65746—Esters of oxyacids of phosphorus the molecule containing more than one cyclic phosphorus atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/49—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
- C07C45/50—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic System
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic System compounds of the platinum group
- C07F15/0073—Rhodium compounds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
- C07F9/6574—Esters of oxyacids of phosphorus
- C07F9/65744—Esters of oxyacids of phosphorus condensed with carbocyclic or heterocyclic rings or ring systems
Definitions
- ligands are, for example, compounds from the classes of the phosphines, phosphites and phosphonites.
- phosphines for example, compounds from the classes of the phosphines, phosphites and phosphonites.
- Rhodium-monophosphite complexes are suitable catalysts for the Hydroformylation of branched olefins with internal double bonds, however, the selectivity for terminally hydroformylated compounds is low.
- EP 0 155 508 discloses the use of bisarylene-substituted monophosphites the rhodium-catalyzed hydroformylation of sterically hindered olefins, e.g. B. Known isobutene.
- Rhodium bisphosphite complexes catalyze the hydroformylation of linear Olefins with terminal and internal double bonds, predominantly Terminally hydroformylated products are formed, but branched ones Olefins with internal double bonds are only implemented to a small extent.
- these phosphites result Catalysts of increased activity, but the service life behavior is this Catalyst systems, among other things because of the hydrolysis sensitivity of the Phosphite ligands, unsatisfactory.
- substituted Bisaryldiols as starting materials for the phosphite ligands, as in EP 0 214 622 or EP 0 472 071 described, considerable improvements could be achieved.
- bisphosphites of general structure I can be easily prepared and are suitable as ligands in metal-catalyzed reactions.
- R 1 to R 4 in formula I can be benzanneled, ie in each case R 1 and R 2 , R 2 and R 3 or R 3 and R 4 can be linked to one another via an aromatic ring.
- Three isomers can thus be realized, which can also be used separately or together as a ligand system.
- the bisphosphites of the formula I according to the invention can therefore also be in the formulas II, III and IV.
- Special embodiments of the bisphosphites according to the invention relate to bisphosphites of the formulas V, VI and VII where W and X are aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic, aliphatic-aromatic hydrocarbon radicals having 1 to 50 carbon atoms, X and W can be linked to one another or identically or differently or covalently and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and Q have the meanings already mentioned.
- M stands for an alkali metal, alkaline earth metal, ammonium or phosphonium ion.
- Q are divalent hydrocarbon radicals, which can be aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic or aliphatic-aromatic. Any ring systems that may be present can in turn be substituted with the above-mentioned hydrocarbon radicals.
- one or more methylene groups can be replaced by oxygen and / or sulfur and / or NR 1 and / or NH and / or one or more CH groups by nitrogen.
- Q is preferably bivalent radicals which contain aromatic groups.
- Q can be, for example, a phenylene radical, naphthylene radical, a divalent bisarylene radical or a divalent radical of a diphenyl ether.
- Q can have the general structure -Ar-Z-Ar-.
- Ar is a mono- or oligocyclic bivalent aromatic radical.
- Z either represents a direct bond or an optionally substituted methylene group -CR 27 R 28 -, where R 27 and R 28 are hydrogen and / or aliphatic and / or aromatic radicals 1 to 25 carbon atoms are available, which may also contain heteroatoms.
- the radicals R 27 and R 28 can be linked to form one or more rings, ie have a covalent bond.
- the catalytically active metal complexes used are preferably used Metals for the bisphosphites according to the invention rhodium, cobalt, platinum and Ruthenium. From forms the ligands according to the invention and the metal Reaction conditions of the active catalyst. The ligands according to the invention can be added to the reaction mixture in free form. It is still possible, a transition metal complex that meets the above. bisphosphite contains to use as a precursor for the actual catalytically active complex. The hydroformylation process can be stoichiometric or with an excess Amount of free bisphosphite ligands (e.g. 1: 1 to 1: 200) can be carried out.
- Phosphonites methyldiethoxyphosphine, phenyldimethoxyphosphine, phenyldiphenoxyphosphine, 2-phenoxy-2H-dibenz [c, e] [1,2] oxaphosphorin and its Derivatives in which the hydrogen atoms are wholly or partly by alkyl and / or Aryl radicals or halogen atoms are replaced and ligands, which are described in WO 98 43935, JP 09-268152 and DE 198 10 794 and in German patent applications DE 199 54 721 and DE 199 54 510 are described.
- Fresh ligand can be added to the reaction at any time to keep the concentration of free ligand constant.
- the transition metal bisphosphite complex catalysts according to the invention can be synthesized before they are used. As a rule, however, the catalytically active complexes are formed in situ in the reaction medium from a catalyst precursor and the bisphosphite ligand according to the invention.
- the concentration of the metal in the reaction mixture is in the range from 1 ppm to 1000 ppm, preferably in the range of 5 ppm to 300 ppm.
- the reaction temperatures for a hydroformylation process with the bisphosphites or bisphosphite metal complexes according to the invention as catalyst are between 40 ° C. and 180 ° C., preferably between 75 ° C. and 140 ° C.
- the pressures at which the hydroformylation takes place are 1-300 bar synthesis gas, preferably 15-64 bar.
- the molar ratio between hydrogen and carbon monoxide (H 2 / CO) in the synthesis gas is 10/1 to 1/10, preferably 1/1 to 2/1.
- the catalyst or ligand is homogeneous in the hydroformylation mixture, consisting of educt (olefins) and products (aldehydes, alcohols, in the process formed high boilers), solved.
- a solvent can also be used become.
- the starting materials for the hydroformylation are monoolefins or mixtures of Monoolefins with 2 to 25 carbon atoms with terminal or internal C-C double bond. They can be straight-chain, branched or of a cyclic structure and also have several olefinically unsaturated groups.
- Examples are Propene, 1-butene, c-2-butene, t-2-butene, isobutene, butadiene, mixtures of the C4-olefins, 1- or 2-pentene, 2-methylbutene-1, 2-methylbutene-2, 3-methylbutene-1, 1-, 2-or 3-Hexene, the C6-olefin mixture obtained in the dimerization of propene (Dipropen), 1-heptene, heptenes, 2- or 3-methyl-1-hexene, 1-octene, octenes, 2-methylheptenes, 3-methylheptene, 5-methylheptene-2, 6-methylheptene-2, 2-ethylhexene-1, the isomeric C8-olefin mixture resulting from the dimerization of butenes (Dibutene), 1-nonen, nonenes, 2- or 3-methyloctenes, which in the Trimerization of propene resulting
- Olefins or olefin mixtures which produced by Fischer-Tropsch synthesis are used, as well as olefins, which are obtained by oligomerization of ethene or which via Methathesis reactions or telomerization reaction are accessible.
- Preferred starting materials are propene, 1-butene, 2-butene, 1-hexene, 1-octene, dimers and Trimers of butene (dibutene, di-n-butene, di-iso-butene, tributes) and generally ⁇ -olefins.
- the hydroformylation can be carried out continuously or batchwise become.
- Examples of technical designs are stirred tanks, bubble columns, Jet nozzle reactors, tubular reactors, or loop reactors, some of which can be cascaded and / or provided with internals.
- the reaction can be carried out continuously or in several stages.
- the separation the resulting aldehyde compounds and the catalyst can by a conventional method, such as fractionation. Technically can this for example via a distillation, a falling film evaporator or a Thin film evaporators are done. This is especially true if the catalyst is in one high-boiling solvents dissolved from the lower-boiling products is separated.
- the separated catalyst solution can be used for further Hydroformylations can be used.
- lower olefins e.g. propene, Butene, pentene
- the test was carried out after filling under protective gas in a 200 ml stainless steel autoclave from Buddeberg, Mannheim, equipped with a gassing stirrer, pressure pipette and holding pressure regulator, in an oil bath thermostat.
- the toluene used as solvent was dried with sodium ketyl and distilled under argon.
- the 1-octene used as substrate was refluxed over sodium for several hours and distilled under argon.
- the molar ratio Rh / P was 1:10.
- the pressure was increased to 47 bar (17 bar) and the olefin mixture was forced into the reactor from the pressure pipette at a pressure of 55 bar (25 bar).
- An initial reaction pressure of 49.6 bar (19.2 bar) was established.
- the bypass was closed and the pressure was kept constant over the entire reaction time with the holding pressure regulator. The experiment was terminated with forced cooling after the specified reaction time.
- the reaction solution was removed under protective gas and analyzed by gas chromatography.
- the test was carried out after filling under protective gas in a 200 ml stainless steel autoclave from Buddeberg, Mannheim, equipped with a gassing stirrer, pressure pipette and holding pressure regulator, in an oil bath thermostat.
- the toluene used as solvent was dried with sodium ketyl and distilled under argon.
- the octene isomer mixture used as the substrate was refluxed for several hours over sodium and distilled under argon.
- Composition 1-octene, 3.3%; cis + trans-2 octene, 48.5%; cis + trans -3-octene, 29.2%; cis + trans -octen-4, 16.4%; branched C8 olefins, 2.6%.
- the ratio Rh / bidentate ligand (ligand) / ether phosphonite (coligand) is shown in the table.
Abstract
Description
Die vorliegende Erfindung betrifft Bisphosphite und deren Metallkomplexe, die Herstellung, sowie die Verwendung der Bisphosphite als Liganden in katalytischen Reaktionen.The present invention relates to bisphosphites and their metal complexes which Production, as well as the use of bisphosphites as ligands in catalytic Reactions.
Die Reaktionen zwischen Olefinverbindungen, Kohlenmonoxid und Wasserstoff in Gegenwart eines Katalysators zu den um ein C-Atom reicheren Aldehyden ist als Hydroformylierung (Oxierung) bekannt. Als Katalysatoren in diesen Reaktionen werden häufig Verbindungen der Übergangsmetalle der VIII. Gruppe des Periodensystems der Elemente verwendet, insbesondere Verbindungen des Rhodiums und des Kobalts. Die Hydroformylierung mit Rhodiumverbindungen bietet im Vergleich zur Katalyse mit Kobaltverbindungen in der Regel den Vorteil höherer Selektivität und ist damit meistens wirtschaftlicher. Bei der durch Rhodium katalysierten Hydroformylierung werden zumeist Komplexe eingesetzt, die aus Rhodium und bevorzugt aus trivalenten Phosphorverbindungen als Liganden bestehen. Bekannte Liganden sind beispielsweise Verbindungen aus den Klassen der Phosphine, Phosphite und Phosphonite. Eine gute Übersicht über den Stand der Hydroformylierung von Olefinen findet sich in B. CORNILS, W. A. HERRMANN, "Applied Homogeneous Catalysis with Organometallic Compounds", Vol. 1&2, VCH, Weinheim, New York, 1996.The reaction between olefin compounds, carbon monoxide and hydrogen in the presence of a catalyst to form a carbon atom-rich aldehydes is known as hydroformylation (oxidation). Compounds of transition metals of group VIII of the Periodic Table of the Elements, in particular compounds of rhodium and cobalt, are frequently used as catalysts in these reactions. Hydroformylation with rhodium compounds generally offers the advantage of higher selectivity compared to catalysis with cobalt compounds and is therefore usually more economical. In the hydroformylation catalyzed by rhodium, complexes are usually used which consist of rhodium and preferably trivalent phosphorus compounds as ligands. Known ligands are, for example, compounds from the classes of the phosphines, phosphites and phosphonites. A good overview of the state of hydroformylation of olefins can be found in B. CORNILS, WA HERRMANN, "Applied Homogeneous Catalysis with Organometallic Compounds" , Vol. 1 & 2, VCH, Weinheim, New York, 1996.
Jedes Katalysatorsystem (Kobalt oder Rhodium) hat seine spezifischen Vorzüge. Je nach Einsatzstoff und Zielprodukt kommen daher unterschiedliche Katalysatorsysteme zum Einsatz, wie folgende Beispiele zeigen. Arbeitet man mit Rhodium und Triphenylphosphin, lassen sich α-Olefine bei niedrigeren Drücken hydroformylieren. Als Phosphor-haltiger Ligand wird in der Regel Triphenylphosphin im Überschuss verwendet, wobei ein hohes Ligand/Rhodium-Verhältnis erforderlich ist, um die Selektivität der Reaktion zum kommerziell erwünschten n-Aldehydprodukt zu erhöhen. Every catalyst system (cobalt or rhodium) has its specific advantages. ever therefore there are different types of feed and target product Catalyst systems for use, as the following examples show. You work with Rhodium and triphenylphosphine, α-olefins can be used at lower pressures hydroformylated. Triphenylphosphine is usually used as the phosphorus-containing ligand used in excess, requiring a high ligand / rhodium ratio is the selectivity of the reaction to the commercially desired n-aldehyde product to increase.
Die Patente US 4 694 109 und US 4 879 416 beschreiben Bisphosphinliganden und ihren Einsatz in der Hydroformylierung von Olefinen bei niedrigen Synthesegasdrücken. Besonders bei der Hydroformylierung von Propen werden mit Liganden dieses Typs hohe Aktivitäten und hohe n/i-Selektivitäten erreicht. In WO 95/30680 werden zweizähnige Phosphinliganden und ihr Einsatz in der Katalyse, unter anderem auch in Hydroformylierungsreaktionen, offen gelegt. Ferrocenverbrückte Bisphosphine werden beispielsweise in den Patentschriften US 4 169 861, US 4 201 714 und US 4 193 943 als Liganden für Hydroformylierungen beschrieben.Patents US 4,694,109 and US 4,879,416 describe bisphosphine ligands and their use in the hydroformylation of olefins at low Synthesis gas pressures. Especially in the hydroformylation of propene Ligands of this type achieved high activities and high n / i selectivities. In WO 95/30680 become bidentate phosphine ligands and their use in catalysis, among other things, also disclosed in hydroformylation reactions. Ferrocene-bridged bisphosphines are described, for example, in US Pat 4,169,861, U.S. 4,201,714 and U.S. 4,193,943 as ligands for hydroformylations described.
Der Nachteil von zweizähnigen Phosphinliganden ist ein relativ hoher Aufwand, der zu ihrer Darstellung notwendig ist. Daher ist es oftmals nicht rentabel, solche Systeme in technischen Prozessen einzusetzen.The disadvantage of bidentate phosphine ligands is that they are relatively expensive is necessary for their presentation. Therefore, it is often not profitable Use systems in technical processes.
Rhodium-Monophosphit-Komplexe sind geeignete Katalysatoren für die Hydroformylierung von verzweigten Olefinen mit innenständigen Doppelbindungen, jedoch ist die Selektivität für endständig hydroformylierte Verbindungen gering. Aus EP 0 155 508 ist die Verwendung von bisarylensubstituierten Monophosphiten bei der rhodiumkatalysierten Hydroformylierung von sterisch gehinderten Olefinen, z. B. Isobuten bekannt.Rhodium-monophosphite complexes are suitable catalysts for the Hydroformylation of branched olefins with internal double bonds, however, the selectivity for terminally hydroformylated compounds is low. Out EP 0 155 508 discloses the use of bisarylene-substituted monophosphites the rhodium-catalyzed hydroformylation of sterically hindered olefins, e.g. B. Known isobutene.
Rhodium-Bisphosphit-Komplexe katalysieren die Hydroformylierung von linearen Olefinen mit end- und innenständigen Doppelbindungen, wobei überwiegend endständig hydroformylierte Produkte entstehen, dagegen werden verzweigte Olefine mit innenständigen Doppelbindungen nur in geringem Maße umgesetzt. Diese Phosphite ergeben bei ihrer Koordination an ein Übergangsmetallzentrum Katalysatoren von gesteigerter Aktivität, doch ist das Standzeitverhalten dieser Katalysatorsysteme, unter anderem wegen der Hydrolyseempfindlichkeit der Phosphitliganden, unbefriedigend. Durch den Einsatz von substituierten Bisaryldiolen als Edukte für die Phosphitliganden, wie in EP 0 214 622 oder EP 0 472 071 beschrieben, konnten erhebliche Verbesserungen erreicht werden. Rhodium bisphosphite complexes catalyze the hydroformylation of linear Olefins with terminal and internal double bonds, predominantly Terminally hydroformylated products are formed, but branched ones Olefins with internal double bonds are only implemented to a small extent. When coordinated to a transition metal center, these phosphites result Catalysts of increased activity, but the service life behavior is this Catalyst systems, among other things because of the hydrolysis sensitivity of the Phosphite ligands, unsatisfactory. Through the use of substituted Bisaryldiols as starting materials for the phosphite ligands, as in EP 0 214 622 or EP 0 472 071 described, considerable improvements could be achieved.
Der Literatur zufolge sind die Rhodiumkomplexe dieser Liganden äußerst aktive Hydroformylierungskatalysatoren für α-Olefine. In den Patenten US 4 668 651, US 4 748 261 und US 4 885 401 werden Polyphosphitliganden beschrieben, mit denen α-Olefine, aber auch 2-Buten mit hoher Selektivität zu den terminal hydroformylierten Produkten umgesetzt werden können. Zweizähnige Liganden dieses Typs wurden auch zur Hydroformylierung von Butadien eingesetzt (US 5 312 996).According to the literature, the rhodium complexes of these ligands are extremely active Hydroformylation catalysts for α-olefins. In the patents US 4,668,651, US 4,748,261 and US 4,885,401 describe polyphosphite ligands with those α-olefins, but also 2-butene with high selectivity to the terminal hydroformylated products can be implemented. Bidentate ligands This type was also used for the hydroformylation of butadiene (U.S. 5,312,996).
Obgleich die genannten Bisphosphite sehr gute Komplexliganden für Rhodium-Hydroformylierungskatalysatoren sind, ist es wünschenswert, deren Wirksamkeit noch weiter zu verbessern.Although the bisphosphites mentioned are very good complex ligands for rhodium hydroformylation catalysts are, it is desirable their effectiveness to improve even further.
Es wurde gefunden, dass Bisphosphite der allgemeinen Struktur I
Gegenstand der vorliegenden Erfindung sind daher Bisphosphite der allgemeinen
Formel I
Jeweils zwei der Reste R1 bis R4 in Formel I können benzanneliert sein, d. h. jeweils
R1 und R2, R2 und R3 oder R3 und R4 können über einen aromatischen Ring
miteinander verknüpft sein. Es sind somit drei Isomere realisierbar, die auch als
Ligandensystem getrennt oder miteinander verwendet werden können. Die
erfindungsgemäßen Bisphosphite der Formel I können daher auch gemäß den
Formeln II, III und IV vorliegen.
Die Bedeutungen der Reste R1 bis R6 entsprechen denen der für Formel I definierten Bedeutungen für R1 bis R4. Es ist möglich, dass diese Reste wiederum eine kovalente Verknüpfung miteinander aufweisen bzw. benzanneliert sind.The meanings of the radicals R 1 to R 6 correspond to those of the meanings defined for R 1 to R 4 for formula I. It is possible that these residues in turn have a covalent linkage with one another or are benzannelated.
Spezielle Ausführungsformen der erfindungsgemäßen Bisphosphite betreffen
Bisphosphite der Formeln V, VI und VII
R9, R10, R11, R12, R13, R14, R15, R16 stehen für H, aliphatischer, alicyclischer,
aliphatisch-alicyclischer, heterocyclischer, aliphatisch-heterocyclischer, aromatischer,
aromatisch-aromatischer, aliphatisch-aromatischer Kohlenwasserstoffrest
mit 1 bis 50 Kohlenstoffatomen, F, CI, Br, I, -CF3, -OR25, -COR25, -CO2R25, -CO2M,
-SR25, -SO2R25, -SOR25, -SO3R25, -SO3M, -SO2NR25R26, NR25R26, N=CR25R26, NH2,
wobei R9 bis R16 eine gleiche oder unterschiedliche Bedeutung besitzen und
kovalent miteinander verknüpft sein können.
M steht für ein Alkalimetall-, Erdalkalimetall-, Ammonium-, oder Phosphoniumion.Special embodiments of the bisphosphites according to the invention relate to bisphosphites of the formulas V, VI and VII
R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 represent H, aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic, aliphatic-aromatic Hydrocarbon radical with 1 to 50 carbon atoms, F, CI, Br, I, -CF 3 , -OR 25 , -COR 25 , -CO 2 R 25 , -CO 2 M, -SR 25 , -SO 2 R 25 , -SOR 25 , -SO 3 R 25 , -SO 3 M, -SO 2 NR 25 R 26 , NR 25 R 26 , N = CR 25 R 26 , NH 2 ,
where R 9 to R 16 have the same or different meaning and can be linked covalently.
M stands for an alkali metal, alkaline earth metal, ammonium or phosphonium ion.
R25 und R26 können gleich oder unterschiedlich sein und jeweils für H, substituierte oder unsubstituierte, aliphatische oder aromatische Kohlenwasserstoffreste mit 1 bis 25 Kohlenstoffatomen, mit gleicher oder unterschiedlicher Bedeutung stehen. R 25 and R 26 can be the same or different and each represent H, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having 1 to 25 carbon atoms, with the same or different meaning.
Beispiele für Q sind bivalente Kohlenwasserstoffreste, die aliphatisch, alicyclisch, aliphatisch-alicyclisch, heterocyclisch, aliphatisch-heterocylisch, aromatisch, aromatisch-aromatisch oder aliphatisch-aromatisch sein können. Gegebenenfalls vorhandene Ringsysteme können ihrerseits mit den oben genannten Kohlenwasserstoffresten substituiert sein. In offenkettigen Strukturelementen können eine oder mehrere Methylengruppen durch Sauerstoff und/oder Schwefel und/oder NR1 und/oder NH und/oder eine oder mehrere CH-Gruppen durch Stickstoff ersetzt sein.Examples of Q are divalent hydrocarbon radicals, which can be aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic or aliphatic-aromatic. Any ring systems that may be present can in turn be substituted with the above-mentioned hydrocarbon radicals. In open-chain structural elements, one or more methylene groups can be replaced by oxygen and / or sulfur and / or NR 1 and / or NH and / or one or more CH groups by nitrogen.
Bevorzugt steht Q für bivalente Reste, die aromatische Gruppen enthalten. Q kann beispielsweise ein Phenylenrest, Naphthylenrest, ein zweiwertiger Bisarylenrest oder ein bivalenter Rest eines Diphenylethers sein. Weiterhin kann Q die allgemeine Struktur -Ar-Z-Ar- haben. Darin bedeutet Ar einen mono- oder oligocyclischen bivalenten aromatischen Rest. Z steht entweder für eine direkte Bindung oder für eine gegebenenfalls substituierte Methylengruppe -CR27R28-, wobei R27 und R28 für Wasserstoff und/oder aliphatische und/oder aromatische Reste mit 1 bis 25 Kohlenstoffatomen stehen, die darüber hinaus Heteroatome enthalten können. Weiterhin können die Reste R27 und R28 zu einem oder mehreren Ringen verknüpft sein, d. h. eine kovalente Bindung aufweisen.Q is preferably bivalent radicals which contain aromatic groups. Q can be, for example, a phenylene radical, naphthylene radical, a divalent bisarylene radical or a divalent radical of a diphenyl ether. Furthermore, Q can have the general structure -Ar-Z-Ar-. Ar is a mono- or oligocyclic bivalent aromatic radical. Z either represents a direct bond or an optionally substituted methylene group -CR 27 R 28 -, where R 27 and R 28 are hydrogen and / or aliphatic and / or aromatic radicals 1 to 25 carbon atoms are available, which may also contain heteroatoms. Furthermore, the radicals R 27 and R 28 can be linked to form one or more rings, ie have a covalent bond.
Von den Bisphosphiten nach den allgemeinen Formeln I, II, III, IV, V, VI und VII sind
diejenigen besonders bevorzugt, bei denen der Rest Q für einen
Kohlenwasserstoffrest (Bisarylenrest) nach der allgemeinen Formel VIII steht
Gegenstand der vorliegenden Erfindung sind auch Bisphosphitmetallkomplexe, enthaltend ein Metall der 4., 5., 6., 7. oder 8. Nebengruppe des Periodensystems der Elemente und ein oder mehrere Bisphosphite der Formeln I, II, III, IV, V, VI und VII. Die Substituenten (R1-R26, Q, X, W) dieser Bisphosphite besitzen die bereits genannten Bedeutungen.The present invention also relates to bisphosphite metal complexes containing a metal of the 4th, 5th, 6th, 7th or 8th subgroup of the Periodic Table of the Elements and one or more bisphosphites of the formulas I, II, III, IV, V, VI and VII. The substituents (R 1 -R 26 , Q, X, W) of these bisphosphites have the meanings already mentioned.
Im Folgenden werden repräsentative Beispiele von Liganden nach den allgemeinen
Formeln I, II, III, IV, V, VI und VII im Sinne dieser Erfindung dargestellt, ohne den
Schutzbereich der vorliegenden Erfindung zu beschränken.
Die erfindungsgemäßen Bisphosphite können durch eine Folge von Reaktionen von
Phosphorhalogeniden mit Alkoholen bzw. α-Hydroxyarylcarbonsäuren, bei denen
Halogenatome am Phosphor gegen Sauerstoffgruppen ausgetauscht werden,
hergestellt werden. Das grundsätzliche Vorgehen wird an einem Weg zu
Verbindungen nach der allgemeinen Formel V illustriert
Dieser Syntheseweg ist nur einer von vielen, zeigt aber das grundsätzliche
Vorgehen. Ein alternativer Weg ist zum Beispiel die Umsetzung von
Zwischenprodukt A mit der Diolkomponente und anschließende Reaktion mit B zum
Zielprodukt.
Da die eingesetzten Diole und ihre Folgeprodukte häufig fest sind, werden die Umsetzungen im Allgemeinen in Lösungsmitteln durchgeführt. Als Solventien werden nicht protische Lösungsmittel, die weder mit den Diolen noch mit den Phosphorverbindungen reagieren, verwendet. Geeignete Lösungsmittel sind beispielsweise Tetrahydrofuran, Diethylether oder aromatische Kohlenwasserstoffe wie Toluol.Since the diols used and their secondary products are often solid, the Reactions are generally carried out in solvents. As solvents are not protic solvents, which neither with the diols nor with the React phosphorus compounds used. Suitable solvents are for example tetrahydrofuran, diethyl ether or aromatic hydrocarbons like toluene.
Bei der Umsetzung von Phosphorhalogeniden mit Alkoholen entsteht Halogenwasserstoff, der durch zugegebene Basen gebunden wird. Beispielsweise werden dafür tertiäre Amine, wie Triethylamin, eingesetzt. Teilweise ist es auch sinnvoll, die Alkohole vor der Reaktion in Metallalkoholate zu überführen, zum Beispiel durch Reaktion mit Natriumhydrid oder Butyllithium.When phosphorus halides are reacted with alcohols Hydrogen halide, which is bound by added bases. For example tertiary amines such as triethylamine are used for this. Sometimes it is sensible to convert the alcohols into metal alcoholates before the reaction Example by reaction with sodium hydride or butyllithium.
Die erfindungsgemäßen Bisphosphite der Formeln I, II, III, IV, V, VI und VII sind geeignete Bausteine für die Herstellung von Komplexen mit Metallen der 4., 5., 6., 7. oder 8. Nebengruppe des Periodensystems der Elemente. Insbesondere mit Metallen der 8. Nebengruppe können diese Komplexe als Katalysatoren für Carbonylierungsreaktionen oder Hydroformylierungsreaktionen verwendet werden, z. B. für die Hydroformylierung von C2-C25-Olefinen. Die Liganden zeichnen sich durch hohe Hydrolysestabilität aus. Besonders bei Einsatz von Rhodium als Katalysatormetall ergeben sich hohe katalytische Aktivitäten in Hydroformylierungsreaktionen. Aufgrund ihres hohen Molekulargewichtes besitzen die erfindungsgemäßen Bisphosphite eine geringe Flüchtigkeit. Sie können daher einfach von den leichter flüchtigen Reaktionsprodukten abgetrennt werden. Sie sind in den gängigen organischen Solventien ausreichend gut löslich. The bisphosphites of the formulas I, II, III, IV, V, VI and VII according to the invention are suitable building blocks for the production of complexes with metals of the 4th, 5th, 6th, 7th or 8. Subgroup of the Periodic Table of the Elements. Especially with Metals of subgroup 8 can use these complexes as catalysts for Carbonylation reactions or hydroformylation reactions are used, z. B. for the hydroformylation of C2-C25 olefins. The ligands stand out from high hydrolysis stability. Especially when using rhodium as Catalyst metal results in high catalytic activities Hydroformylation reactions. Owing to their high molecular weight the bisphosphites according to the invention have low volatility. So you can simply separated from the more volatile reaction products. they are sufficiently soluble in common organic solvents.
Weitere Gegenstände der Erfindung sind die Verwendungen der Bisphosphite bzw. der Bisphosphitmetallkomplexe in Verfahren zur Hydroformylierung von Olefinen, bevorzugt mit 2 bis 25 Kohlenstoffatomen, zu den entsprechenden Aldehyden.Further subjects of the invention are the uses of the bisphosphites or the bisphosphite metal complexes in processes for the hydroformylation of olefins, preferably with 2 to 25 carbon atoms, to the corresponding aldehydes.
Zur Herstellung der katalytisch aktiven Metallkomplexe sind bevorzugt eingesetzte Metalle für die erfindungsgemäßen Bisphosphite Rhodium, Kobalt, Platin und Ruthenium. Aus den erfindungsgemäßen Liganden und dem Metall bildet sich unter Reaktionsbedingungen der aktive Katalysator. Die erfindungsgemäßen Liganden können dabei in freier Form in die Reaktionsmischung gegeben werden. Es ist weiterhin möglich, einen Übergangsmetallkomplex, der die o. g. Bisphosphitliganden enthält, als Precursor für den eigentlichen katalytisch aktiven Komplex einzusetzen. Der Hydroformylierungsprozess kann stöchiometrisch oder mit einer überschüssigen Menge an freien Bisphosphitliganden (z. B. 1 : 1 bis 1 : 200) durchgeführt werden.The catalytically active metal complexes used are preferably used Metals for the bisphosphites according to the invention rhodium, cobalt, platinum and Ruthenium. From forms the ligands according to the invention and the metal Reaction conditions of the active catalyst. The ligands according to the invention can be added to the reaction mixture in free form. It is still possible, a transition metal complex that meets the above. bisphosphite contains to use as a precursor for the actual catalytically active complex. The hydroformylation process can be stoichiometric or with an excess Amount of free bisphosphite ligands (e.g. 1: 1 to 1: 200) can be carried out.
Ferner können auch Mischungen verschiedener Liganden - sowohl der
erfindungsgemäßen Bisphosphite, hier auch die Isomeren gemäß den Formel II bis
IV, als auch anderer geeigneter phosphorhaltiger Liganden als freie
Ligandkomponente vorhanden sein.
Als zusätzliche, im Reaktionsgemisch vorhandene Liganden können Phosphine,
Phosphite, Phosphonite oder Phosphinite eingesetzt werden.Mixtures of different ligands - both the bisphosphites according to the invention, here also the isomers according to formulas II to IV, and other suitable phosphorus-containing ligands can also be present as a free ligand component.
Phosphines, phosphites, phosphonites or phosphinites can be used as additional ligands present in the reaction mixture.
Beispiele für solche Liganden sind:
Phosphonite: Methyldiethoxyphosphin, Phenyldimethoxyphosphin, Phenyldiphenoxyphosphin, 2-Phenoxy-2H-dibenz[c,e][1,2]oxaphosphorin und dessen Derivate, in denen die Wasserstoffatome ganz oder teilweise durch Alkyl- und/oder Arylreste oder Halogenatome ersetzt sind und Liganden, die in WO 98 43935, JP 09-268152 und DE 198 10 794 und in den deutschen Patentanmeldungen DE 199 54 721 und DE 199 54 510 beschrieben sind.Phosphonites: methyldiethoxyphosphine, phenyldimethoxyphosphine, phenyldiphenoxyphosphine, 2-phenoxy-2H-dibenz [c, e] [1,2] oxaphosphorin and its Derivatives in which the hydrogen atoms are wholly or partly by alkyl and / or Aryl radicals or halogen atoms are replaced and ligands, which are described in WO 98 43935, JP 09-268152 and DE 198 10 794 and in German patent applications DE 199 54 721 and DE 199 54 510 are described.
Gängige Phosphinitliganden sind unter anderem in US 5 710 344, WO 95 06627,
US 5 360 938 oder JP 07082281 beschrieben. Beispiele hierfür sind Diphenyl(phenoxy)phosphin
und dessen Derivate, in denen die Wasserstoffatome ganz oder
teilweise durch Alkyl- und/oder Arylreste oder Halogenatome ersetzt sind,
Diphenyl(methoxy)phosphin, Diphenyl(ethoxy)phosphin usw.
Im Allgemeinen werden 1 bis 500, vorzugsweise 1 bis 200, bevorzugt 3 bis 50 Mol
des erfindungsgemäßen Liganden pro Mol Gruppe-VIII-Übergangsmetall eingesetzt.
Frischer Ligand kann zu jedem Zeitprodukt der Reaktion zugesetzt werden, um die
Konzentration an freiem Liganden konstant zu halten. Die erfindungsgemäßen
Übergangsmetall-Bisphosphitkomplex-Katalysatoren können vor ihrem Einsatz
synthetisiert werden. In der Regel werden aber die katalytisch aktiven Komplexe aus
einem Katalysatorvorläufer und dem erfindungsgemäßen Bisphosphitliganden in situ
im Reaktionsmedium gebildet.Common phosphinite ligands are described, inter alia, in US Pat. No. 5,710,344, WO 95,06627, US Pat. No. 5,360,938 or JP 07082281. Examples include diphenyl (phenoxy) phosphine and its derivatives in which the hydrogen atoms are replaced in whole or in part by alkyl and / or aryl radicals or halogen atoms, diphenyl (methoxy) phosphine, diphenyl (ethoxy) phosphine, etc.
In general, 1 to 500, preferably 1 to 200, preferably 3 to 50 moles of the ligand according to the invention are used per mole of Group VIII transition metal. Fresh ligand can be added to the reaction at any time to keep the concentration of free ligand constant. The transition metal bisphosphite complex catalysts according to the invention can be synthesized before they are used. As a rule, however, the catalytically active complexes are formed in situ in the reaction medium from a catalyst precursor and the bisphosphite ligand according to the invention.
Als Katalysatorvorläufer kommen Salze oder Komplexe der Übergangsmetalle zum Einsatz. Beispiele sind Rhodiumcarbonyle, Rhodiumnitrat, Rhodiumchlorid, Rh(CO)2(acac) (acac = Acetylacetonat), Rhodiumacetat, Rhodiumoctanoat oder Rhodiumnonanoat. Salts or complexes of the transition metals are used as catalyst precursors. Examples are rhodium carbonyls, rhodium nitrate, rhodium chloride, Rh (CO) 2 (acac) (acac = acetylacetonate), rhodium acetate, rhodium octanoate or rhodium nonanoate.
Die Konzentration des Metalls im Reaktionsgemisch liegt im Bereich von 1 ppm bis 1000 ppm, vorzugsweise im Bereich von 5 ppm bis 300 ppm.The concentration of the metal in the reaction mixture is in the range from 1 ppm to 1000 ppm, preferably in the range of 5 ppm to 300 ppm.
Die mit den erfindungsgemäßen Bisphosphiten bzw. den entsprechenden Metallkomplexen durchgeführten Hydroformylierungsreaktionen erfolgten nach bekannten Vorschriften, wie z. B. in J. FALBE, "New Syntheses with Carbon Monoxide", Springer Verlag, Berlin, Heidelberg, New York, Seite 95 ff., (1980) beschrieben.Those with the bisphosphites according to the invention or the corresponding ones Metal complexes carried out after hydroformylation reactions known regulations, such as B. in J. FALBE, "New Syntheses with Carbon Monoxide ", Springer Verlag, Berlin, Heidelberg, New York, page 95 ff., (1980) described.
Die Reaktionstemperaturen für ein Hydroformylierungsverfahren mit den erfindungsgemäßen Bisphosphiten bzw. Bisphosphitmetallkomplexen als Katalysator liegen zwischen 40 °C und 180 °C, vorzugsweise zwischen 75 °C und 140 °C. Die Drücke, unter denen die Hydroformylierung abläuft, betragen 1-300 bar Synthesegas, vorzugsweise 15-64 bar. Das Molverhältnis zwischen Wasserstoff und Kohlenmonoxid (H2/CO) im Synthesegas beträgt 10/1 bis 1/10, bevorzugt 1/1 bis 2/1.The reaction temperatures for a hydroformylation process with the bisphosphites or bisphosphite metal complexes according to the invention as catalyst are between 40 ° C. and 180 ° C., preferably between 75 ° C. and 140 ° C. The pressures at which the hydroformylation takes place are 1-300 bar synthesis gas, preferably 15-64 bar. The molar ratio between hydrogen and carbon monoxide (H 2 / CO) in the synthesis gas is 10/1 to 1/10, preferably 1/1 to 2/1.
Der Katalysator bzw. der Ligand ist homogen im Hydroformylierungsgemisch, bestehend aus Edukt (Olefine) und Produkten (Aldehyden, Alkoholen, im Prozess gebildete Hochsieder), gelöst. Optional kann zusätzlich ein Lösungsmittel verwendet werden.The catalyst or ligand is homogeneous in the hydroformylation mixture, consisting of educt (olefins) and products (aldehydes, alcohols, in the process formed high boilers), solved. Optionally, a solvent can also be used become.
Die Edukte für die Hydroformylierung sind Monoolefine oder Gemische von Monoolefinen mit 2 bis 25 Kohlenstoffatomen mit end- oder innenständiger C-C-Doppelbindung. Sie können geradkettig, verzweigt oder von cyclischer Struktur sein und auch mehrere olefinisch ungesättigte Gruppen aufweisen. Beispiele sind Propen, 1-Buten, c-2-Buten, t-2-Buten, Isobuten, Butadien, Mischungen der C4-Olefine, 1- oder 2-Penten, 2-Methylbuten-1, 2-Methylbuten-2, 3-Methylbuten-1, 1-, 2-oder 3-Hexen, das bei der Dimerisierung von Propen anfallende C6-Olefingemisch (Dipropen), 1-Hepten, Heptene, 2- oder 3-Methyl-1-hexen, 1-Octen, Octene, 2-Methylheptene, 3-Methylheptene, 5-Methylhepten-2, 6-Methylhepten-2, 2-Ethylhexen-1, das bei der Dimerisierung von Butenen anfallende isomere C8-Olefingemisch (Dibuten), 1-Nonen, Nonene, 2- oder 3-Methyloctene, das bei der Trimerisierung von Propen anfallende C9-Olefingemisch (Tripropen), Decene, 2-Ethyl-1-octen, Dodecene, das bei der Tetramerisierung von Propen oder der Trimerisierung von Butenen anfallende C12-Olefingemisch (Tetrapropen oder Tributen), Tetradecene, Hexadecene, bei der Tetramerisierung von Butenen anfallende C16-Olefingemisch (Tetrabuten) sowie durch Cooligomerisierung von Olefinen mit unterschiedlicher C-Zahl (bevorzugt 2 bis 4) hergestellte Olefingemische, gegebenenfalls nach destillativer Trennung in Fraktionen mit gleicher oder ähnlicher C-Zahl. Ebenfalls können Olefine oder Olefingemische, die durch Fischer-Tropsch-Synthese erzeugt werden, eingesetzt werden, sowie Olefine, die durch Oligomerisierung von Ethen erhalten werden oder die über Methathesereaktionen oder Telomerisationsreaktion zugänglich sind.The starting materials for the hydroformylation are monoolefins or mixtures of Monoolefins with 2 to 25 carbon atoms with terminal or internal C-C double bond. They can be straight-chain, branched or of a cyclic structure and also have several olefinically unsaturated groups. examples are Propene, 1-butene, c-2-butene, t-2-butene, isobutene, butadiene, mixtures of the C4-olefins, 1- or 2-pentene, 2-methylbutene-1, 2-methylbutene-2, 3-methylbutene-1, 1-, 2-or 3-Hexene, the C6-olefin mixture obtained in the dimerization of propene (Dipropen), 1-heptene, heptenes, 2- or 3-methyl-1-hexene, 1-octene, octenes, 2-methylheptenes, 3-methylheptene, 5-methylheptene-2, 6-methylheptene-2, 2-ethylhexene-1, the isomeric C8-olefin mixture resulting from the dimerization of butenes (Dibutene), 1-nonen, nonenes, 2- or 3-methyloctenes, which in the Trimerization of propene resulting C9-olefin mixture (tripropen), decenes, 2-ethyl-1-octene, Dodecene, which is used in the tetramerization of propene or the Trimerization of C12-olefin mixture (tetrapropene or Tributes), tetradecenes, hexadecenes, in the tetramerization of butenes resulting C16-olefin mixture (tetrabutene) and by cooligomerization of Olefins with different C numbers (preferably 2 to 4) Olefin mixtures, if appropriate after separation by distillation into fractions same or similar C number. Olefins or olefin mixtures which produced by Fischer-Tropsch synthesis, are used, as well as olefins, which are obtained by oligomerization of ethene or which via Methathesis reactions or telomerization reaction are accessible.
Bevorzugte Edukte sind Propen, 1-Buten, 2-Buten, 1-Hexen, 1-Octen, Dimere und Trimere des Butens (Dibuten, Di-n-buten, Di-iso-buten, Tributen) und allgemein α-Olefine.Preferred starting materials are propene, 1-butene, 2-butene, 1-hexene, 1-octene, dimers and Trimers of butene (dibutene, di-n-butene, di-iso-butene, tributes) and generally α-olefins.
Die Hydroformylierung kann kontinuierlich oder diskontinuierlich durchgeführt werden. Beispiele für technische Ausführungen sind Rührkessel, Blasensäulen, Strahldüsenreaktoren, Rohrreaktoren, oder Schlaufenreaktoren, die zum Teil kaskadiert und/oder mit Einbauten versehen sein können.The hydroformylation can be carried out continuously or batchwise become. Examples of technical designs are stirred tanks, bubble columns, Jet nozzle reactors, tubular reactors, or loop reactors, some of which can be cascaded and / or provided with internals.
Die Reaktion kann durchgehend oder in mehreren Stufen erfolgen. Die Trennung der entstandenen Aldehydverbindungen und des Katalysators kann durch eine herkömmliche Methode, wie Fraktionierung, durchgeführt werden. Technisch kann dies beispielsweise über eine Destillation, über einen Fallfilmverdampfer oder einen Dünnschichtverdampfer erfolgen. Die gilt besonders, wenn der Katalysator in einem hochsiedenden Lösungsmittel gelöst von den niedriger siedenden Produkten abgetrennt wird. Die abgetrennte Katalysatorlösung kann für weitere Hydroformylierungen verwendet werden. Bei Einsatz niederer Olefine (z. B. Propen, Buten, Penten) ist auch ein Austrag der Produkte aus dem Reaktor über die Gasphase möglich. The reaction can be carried out continuously or in several stages. The separation the resulting aldehyde compounds and the catalyst can by a conventional method, such as fractionation. Technically can this for example via a distillation, a falling film evaporator or a Thin film evaporators are done. This is especially true if the catalyst is in one high-boiling solvents dissolved from the lower-boiling products is separated. The separated catalyst solution can be used for further Hydroformylations can be used. When using lower olefins (e.g. propene, Butene, pentene) is also a discharge of the products from the reactor over the Gas phase possible.
Die folgenden Beispiele sollen die Erfindung erläutern, nicht aber ihren Anwendungsbereich beschränken, der sich aus den Patentansprüchen ergibt.The following examples are intended to illustrate the invention but not its Restrict the scope resulting from the claims.
Alle Präparationen wurden mit Standard-Schlenk-Technik unter Schutzgas
durchgeführt. Die Lösungsmittel wurden vor Gebrauch über geeigneten
Trocknungsmitteln getrocknet.
Das in der Synthese eingesetzte 2-Chlor-1,3-dioxa-2-phospha-anthracen-4-on
wurde laut einer Literaturvorschrift synthetisiert (BE 667036, Farbwerke Hoechst AG,
1966 ;Chem. Abstr. 65 (1966) 13741d). Das 3-Chlor-2,4-dioxa-3-phosphaphenanthren-1-on
wurde auf analoge Weise erhalten. 2-Chlor-2.3-dioxa-2-phosphanaphthalin-4-on
(van Boom's Reagenz) ist kommerziell erhältlich.All preparations were carried out using standard Schlenk technology under protective gas. The solvents were dried over suitable drying agents before use.
The 2-chloro-1,3-dioxa-2-phospha-anthracen-4-one used in the synthesis was synthesized according to a literature specification (BE 667036, Farbwerke Hoechst AG, 1966; Chem . Abstr . 65 (1966) 13741d). The 3-chloro-2,4-dioxa-3-phosphaphenanthren-1-one was obtained in an analogous manner. 2-Chloro-2,3-dioxa-2-phosphanaphthalin-4-one (van Boom's reagent) is commercially available.
Zu einer Lösung von 2.42 g 2,2'-Bis(6-tert.-butyl-1-hydroxy-4-methoxyphenyl) (6.75
mmol) und 1.6 ml Pyridin in 22 ml THF tropft man bei 0 °C eine Lösung von 0.93 g
PCl3 (6.75 mmol) in 10 ml THF. Nach 4 h Rühren bei 25 °C wird das Lösungsmittel
im Vakuum entfernt. Nach Zusatz von 40 ml Diethylether, Filtration und Einengen im
Vakuum werden 2.8 g (98 %) an spektroskopisch reinem Chloro-phosphorigsäureester
des 2,2'-Bis(6-tert.-butyl-1-hydroxy-4-methoxyphenyl)
erhalten: 31P-NMR (CD2Cl2) δ 172.7 ppm. 2.8 g dieses Chloroesters (6.62 mmol) in
20 ml THF gibt man bei Raumtemperatur zu einer bei -20 °C erhaltenen
Monolithiumphenolatlösung aus 2.37 g 2,2'-Bis(6-tert.-butyl-1-hydroxy-4-methoxyphenyl)
(6.62 mmol) in 30 ml THF und 20.7 ml einer 0.32 M Hexanlösung
von n-Butyllithium (6.62 mmol). Nach 24 h wird im Vakuum eingeengt. Zugabe von
40 ml Methylenchlorid, Filtration und Entfernen des Solvens im Vakuum ergeben 4.6
g (93 %) an hochviskosem Produkt.
Analyse (ber. für C44H57O8P = 744.9 g/ Mol) C 70.35 (70.95); H 7.86 (7.71). 31P-NMR
(CD2Cl2) δ 140.7 ppm. 1H-NMR (CD2Cl2) δ 1.43 (s, 9 H); 1.56 (s, 9 H); 1.63 (s, 9 H);
1.67 (s, 9 H); 4.01 (s, 3 H);4.03 (s, 6 H); 4.05 (s, 3 H); 5.42 (s, 1 H); 6.7...7.3 (m, 8 H)
ppm. FAB MS: m/e 745 (37%, M +); 387 (100 %, M +- 2,2'-Bis(6-tert.-butyl-1-hydroxy-4-methoxyphenyl)).
IR (CHCl3, 0.1 mm CaF2), ν (OH) = 3549 cm-1.A solution of 0.93 is added dropwise at 0 ° C. to a solution of 2.42 g of 2,2'-bis (6- tert -butyl-1-hydroxy-4-methoxyphenyl) (6.75 mmol) and 1.6 ml of pyridine in 22 ml of THF g PCl 3 (6.75 mmol) in 10 ml THF. After stirring at 25 ° C. for 4 h, the solvent is removed in vacuo. After addition of 40 ml of diethyl ether, filtration and concentration in vacuo, 2.8 g (98%) of spectroscopically pure chlorophosphorous acid ester of 2,2'-bis (6- tert -butyl-1-hydroxy-4-methoxyphenyl) are obtained: 31 P NMR (CD 2 Cl 2 ) δ 172.7 ppm. 2.8 g of this chloroester (6.62 mmol) in 20 ml THF are added at room temperature to a monolithiumphenolate solution obtained at -20 ° C from 2.37 g 2,2'-bis (6- tert -butyl-1-hydroxy-4-methoxyphenyl) (6.62 mmol) in 30 ml THF and 20.7 ml of a 0.32 M hexane solution of n-butyllithium (6.62 mmol). After 24 h, the mixture is concentrated in vacuo. Addition of 40 ml of methylene chloride, filtration and removal of the solvent in vacuo give 4.6 g (93%) of highly viscous product.
Analysis (calc. For C 44 H 57 O 8 P = 744.9 g / mol) C 70.35 (70.95); H 7.86 (7.71). 31 P NMR (CD 2 Cl 2 ) δ 140.7 ppm. 1 H NMR (CD 2 Cl 2 ) δ 1.43 (s, 9 H); 1.56 (s, 9H); 1.63 (s, 9H); 1.67 (s, 9H); 4.01 (s, 3H); 4.03 (s, 6H); 4.05 (s, 3H); 5.42 (s, 1H); 6.7 ... 7.3 (m, 8 H) ppm. FAB MS: m / e 745 (37%, M + ); 387 (100%, M + - 2,2'-bis (6- tert -butyl-1-hydroxy-4-methoxyphenyl)). IR (CHCl 3 , 0.1 mm CaF 2 ), ν (OH) = 3549 cm -1 .
Die Synthese wird analog zur Präparation von C-1 durchgeführt. Der
Chlorophosphitdiester wird in nahezu quantitativer Ausbeute (98.4 %, 31P NMR,
CD2Cl2 δ 172.0) erhalten. Für den zweiten Schritt der Reaktionssequenz werden
dieser Chlorophosphitdiester (10.7 g, 22.5 mmol), 1.6 M Butyllithiumlösung in Hexan
(14.1 ml) und die entsprechende Dihydroxydiphenylverbindung umgesetzt. Nach
Entfernen des Lösungsmittels wird der Rückstand mehrmals mit heißem Hexan
extrahiert. Aus den vereinigten Hexanfraktionen kristallisiert das Produkt aus, wird
isoliert und im Vakuum getrocknet. Ausbeute: 76.4%
Analyse (ber. für C56H81O4P = 849.23 g/ Mol) C 78.78 (79.20); H 9.95 (9.61). 31P-NMR
(CD2Cl2) δ 142.3 ppm. 1H-NMR (CD2Cl2) δ 0.98 (s, 9 H); 1.15 (s, 9 H); 1.21 (s,
9 H); 1.22 (s, 9 H); 1.23 (s, 9 H); 1.24 (s, 9 H); 1.30 (s, 9 H); 1.36 (s, 9 H); 5.35 (s, 1
H); 6.99 (d, 1 H); 7.01 (d, 1 H); 7.05 (d, 1 H); 7.06 (d, 1 H); 7.26 (d, 2 H) ; 7.32 (d, 1
H); 7.36 (d, 1 H) ppm.The synthesis is carried out analogously to the preparation of C-1. The chlorophosphite diester is obtained in almost quantitative yield (98.4%, 31 P NMR, CD 2 Cl 2 δ 172.0). For the second step of the reaction sequence, this chlorophosphite diester (10.7 g, 22.5 mmol), 1.6 M butyllithium solution in hexane (14.1 ml) and the corresponding dihydroxydiphenyl compound are reacted. After removing the solvent, the residue is extracted several times with hot hexane. The product crystallizes out of the combined hexane fractions, is isolated and dried in vacuo. Yield: 76.4%
Analysis (calc. For C 56 H 81 O 4 P = 849.23 g / mol) C 78.78 (79.20); H 9.95 (9.61). 31 P NMR (CD 2 Cl 2 ) δ 142.3 ppm. 1 H NMR (CD 2 Cl 2 ) δ 0.98 (s, 9 H); 1.15 (s, 9H); 1.21 (s, 9H); 1.22 (s, 9H); 1.23 (s, 9H); 1.24 (s, 9H); 1.30 (s, 9H); 1.36 (s, 9H); 5.35 (s, 1H); 6.99 (d, 1H); 7.01 (d, 1H); 7.05 (d, 1H); 7.06 (d, 1H); 7.26 (d, 2H); 7.32 (d, 1H); 7.36 (d, 1H) ppm.
Zu einer Lösung von 2.27 g C-1 (3.04 mmol) in 24 ml THF werden bei -20°C unter
Rühren innerhalb von 10 min 9.5 ml einer 0.32 M Lösung von n-Butyllithium (3.04
mmol) getropft. Nach Erwärmen auf Raumtemperatur wird zunächst 30 min
nachgerührt, und die erhaltene Mischung dann zu 22 ml einer 0.138 M Lösung von
2-Chlor-1,3-dioxa-2-phospha-anthracen-4-on (3.04 mmol) in THF gegeben. Man
rührt die Reaktionsmischung 4 h bei 25 °C, entfernt das Lösungsmittel im Vakuum
und verrührt den sirupösen Rückstand 2 h mit 60 ml Hexan. Man filtriert, wäscht mit
2x 7 ml Hexan und extrahiert den Filterkuchen durch Rückdestillation von Hexan aus
dem Filtrat. 3-tägiges Lagern der Mutterlauge bei 5 °C ergibt 0.828 g reinen
Feststoff. Eine zusätzliche Extraktion des Filterkuchens der Hexanextraktion mit 35
ml siedendem Diethylether ergibt nach Volumenreduktion des Filtrates auf 50 % und
Lagerung bei 5 °C 0.6 g Produkt. Gesamtausbeute: 1.428 g = 49 %. Analyse (ber.
für C55H62O11P2 = 961.03 g/mol) C 68.69 (68.74); H 6.73 (6.50); P 6.41 (6.45) %. 31P-NMR
(CD2Cl2): δ 118.1; 119.1; 139.0; 140.2. 1H-NMR (CD2Cl2) : δ 1.15..1.44 (36 H);
3.81..3.93 (12 H); 6.57..8.71(14 H).
FAB-MS: m/e 961 (30 %, M +); 745 (31 %); 727 (97 %); 387 (100 %).9.5 ml of a 0.32 M solution of n-butyllithium (3.04 mmol) are added dropwise to a solution of 2.27 g of C-1 (3.04 mmol) in 24 ml of THF at -20 ° C. while stirring within 10 min. After warming to room temperature, stirring is continued for 30 min, and the mixture obtained is then added to 22 ml of a 0.138 M solution of 2-chloro-1,3-dioxa-2-phospha-anthracen-4-one (3.04 mmol) in THF. The reaction mixture is stirred for 4 hours at 25 ° C., the solvent is removed in vacuo and the syrupy residue is stirred with 60 ml of hexane for 2 hours. It is filtered, washed with 2 × 7 ml of hexane and the filter cake is extracted from the filtrate by redistilling hexane. Storage of the mother liquor for 3 days at 5 ° C. gives 0.828 g of pure solid. An additional extraction of the filter cake of the hexane extraction with 35 ml of boiling diethyl ether results in 0.6 g of product after volume reduction of the filtrate to 50% and storage at 5 ° C. Total yield: 1,428 g = 49%. Analysis (calc. For C 55 H 62 O 11 P 2 = 961.03 g / mol) C 68.69 (68.74); H 6.73 (6.50); P 6.41 (6.45)%. 31 P NMR (CD 2 Cl 2 ): δ 118.1; 119.1; 139.0; 140.2. 1 H NMR (CD 2 Cl 2 ): δ 1.15..1.44 (36 H); 3.81-3.93 (12H); 6.57..8.71 (14 H).
FAB-MS: m / e 961 (30%, M + ); 745 (31%); 727 (97%); 387 (100%).
Als P-Cl Verbindung kommt 3-Chlor-2,4-dioxa-3-phospha-phenanthren-1-on zum Einsatz. Die Synthese wird ausgehend von 2.31 g C-1 ( 3.10 mmol) bis zur Extraktion des Filterkuchens mit rückdestilliertem Hexan aus dem Filtrat analog zur Darstellung von 2-a durchgeführt. Die anschließende Lagerung der Lösung bei 5 °C ergibt zunächst 0.90 g, nach Volumenreduktion auf die Hälfte weitere 1.36 g Produkt, Gesamtausbeute: 2.26 g = 75 %. Analyse (ber. für C55H62O11P2 = 961.03 g/mol) C 69.42 (68.74); H 7.16 (6.50); P 5.98 (6.45) %. 31P-NMR (CD2Cl2): δ 120.3; 121.1; 139.7; 140.7. 1H-NMR (CD2Cl2): 0.87..1.40 (36 H); 3.75..3.88 (12 H); 6.63..8.17 (14 H). CI-MS: m/e 962 (31 %, M-H +); 745 (100 %); 405 (90 %); 387 (80 %).3-Chloro-2,4-dioxa-3-phospha-phenanthren-1-one is used as the P-Cl compound. The synthesis is carried out starting from 2.31 g of C-1 (3.10 mmol) until the filter cake is extracted with redistilled hexane from the filtrate analogously to the preparation of 2-a . Subsequent storage of the solution at 5 ° C. initially gives 0.90 g, after reducing the volume to half another 1.36 g of product, overall yield: 2.26 g = 75%. Analysis (calc. For C 55 H 62 O 11 P 2 = 961.03 g / mol) C 69.42 (68.74); H 7.16 (6.50); P 5.98 (6.45)%. 31 P NMR (CD 2 Cl 2 ): δ 120.3; 121.1; 139.7; 140.7. 1 H NMR (CD 2 Cl 2 ): 0.87.1.1.40 (36 H); 3.75..3.88 (12H); 6.63..8.17 (14 H). CI-MS: m / e 962 (31%, MH + ); 745 (100%); 405 (90%); 387 (80%).
Als P-Cl Verbindung kommt 2-Chlor-1.3-dioxa-2-phosphanaphthalin-4-on zum Einsatz. Die Synthese wird ausgehend von 6.86 g C-1 bis zur Extraktion des Filterkuchens analog zur Darstellung von 2-a durchgeführt. Die Extraktion erfolgt mit heißem Hexan und mit Diethylether. Nach Reduzierung der Lösungsmittelmenge auf ein Drittel und anschließender Lagerung der Lösung bei -20 °C erhält man das Produkt in 54% Ausbeute. 31P-NMR (CD2Cl2): δ 119.2 (m); 119.8 (m); 139.5 (m); 140.1 (m); 1H-NMR (CD2Cl2): 1.02..1.26 (36 H); 3.67..3.74 (12 H); 6.43..7.99 (12 H). FAB-MS: m/e 911 (100%, M+), 744 (18%), 387 (13%).2-Chloro-1,3-dioxa-2-phosphanaphthalin-4-one is used as the P-Cl compound. The synthesis is carried out starting from 6.86 g of C-1 until extraction of the filter cake analogous to the representation of 2-a . The extraction is carried out with hot hexane and with diethyl ether. After reducing the amount of solvent to a third and then storing the solution at -20 ° C., the product is obtained in 54% yield. 31 P NMR (CD 2 Cl 2 ): δ 119.2 (m); 119.8 (m); 139.5 (m); 140.1 (m); 1 H NMR (CD 2 Cl 2 ): 1.02..1.26 (36 H); 3.67..3.74 (12H); 6.43..7.99 (12 H). FAB-MS: m / e 911 (100%, M +), 744 (18%), 387 (13%).
Als P-Cl Verbindung kommt 2-Chlor-1,3-dioxa-2-phosphanaphthalin-4-on zum Einsatz. Die Synthese wird ausgehend von 4.93 g C-2 analog zur Synthese von Verbindung 2-a durchgeführt. Gesamtausbeute 50.4 %. Analyse (ber. für C63H84O7P2 = 1015.30 g/mol) C 74.86 (74.53); H 8.43 (8.34). 31P-NMR (CD2Cl2): δ 118.5, 119.7, 142.0, 142.8; 1H-NMR (CD2Cl2): 0.90..1.36 (72 H); 6.74..7.90 (12 H); FAB-MS: m/e 1015 (7%, M+), 832 (100%), 439 (70%). 2-Chloro-1,3-dioxa-2-phosphanaphthalin-4-one is used as the P-Cl compound. The synthesis is carried out starting from 4.93 g of C-2 analogously to the synthesis of compound 2-a. Overall yield 50.4%. Analysis (calc. For C63H 84 O 7 P 2 = 1015.30 g / mol) C 74.86 (74.53); H 8.43 (8.34). 31 P NMR (CD 2 Cl 2 ): δ 118.5, 119.7, 142.0, 142.8; 1 H NMR (CD 2 Cl 2 ): 0.90..1.36 (72 H); 6.74..7.90 (12H); FAB-MS: m / e 1015 (7%, M +), 832 (100%), 439 (70%).
Als P-CI Verbindung kommt 2-Chlor-1,3-dioxa-2-phospha-anthracen-4-on zum Einsatz. Die Synthese wird ausgehend von 5.07 g C-2 analog zur Darstellung von 2-a durchgeführt. Ausbeute: 73 %. Analyse (ber. für C67H86O7P2 = 1065.36 g/mol) C 75.24 (75.54); H 8.16 (8.14). 31P-NMR (CD2Cl2): δ 117.8, 118.9, 142.1, 142.9; Verhältnis der Diastereomeren 1.3 : 1. 1H-NMR (CD2Cl2): 0.99..1.35 (72 H); 6.95..8.55 (14 H). FAB-MS: m/e 1064 (18%, M-H), 831(100%), 439 (78%).2-Chloro-1,3-dioxa-2-phospha-anthracen-4-one is used as the P-CI compound. The synthesis is carried out starting from 5.07 g of C-2 analogously to the preparation of 2-a. Yield: 73%. Analysis (calc. For C 67 H 86 O 7 P 2 = 1065.36 g / mol) C 75.24 (75.54); H 8.16 (8.14). 31 P NMR (CD 2 Cl 2 ): δ 117.8, 118.9, 142.1, 142.9; Ratio of diastereomers 1.3: 1. 1 H-NMR (CD 2 Cl 2 ): 0.99..1.35 (72 H); 6.95..8.55 (14 H). FAB-MS: m / e 1064 (18%, MH), 831 (100%), 439 (78%).
Die Versuchsdurchführung erfolgte nach Befüllen unter Schutzgas in einem mit
Begasungsrührer, Druckpipette und Nachdruckregler ausgestatteten 200 ml-Edelstahlautoklav
der Fa. Buddeberg, Mannheim, im Ölbadthermostaten. Zur
Minimierung eines Einflusses von Feuchtigkeit und Sauerstoff wurde das als
Solvens benutzte Toluol mit Natrium-Ketyl getrocknet und unter Argon destilliert.
Das als Substrat eingesetzte 1-Octen wurde mehrere Stunden über Natrium am
Rückfluß erhitzt und unter Argon destilliert.
Der Autoklav wurde beschickt mit 27 ml Toluol, in welchem 5.456 mg= 0.0176 mmol
[acacRh(COD)], und 0.088 mmol des jeweiligen Liganden gelöst waren. Das molare
Verhältnis Rh/P betrug damit 1:10. In die Druckpipette über dem Reaktor gab man
24 ml = ca. 16.8 g (149.3 mmol) 1-Octen. Das Verhältnis Rh/1-Octen betrug damit
ca. 1: 8500. Reaktor und Druckpipette wurden über einen der Druckregelstrecke
parallel geschalteten Bypass bei einem Solldruck von 50 bar mit 33 bar, bei einem
Solldruck von 20 bar mit 13 bar CO/H2 (1:1; Synthesegas) beaufschlagt und der
Reaktorinhalt unter magnetischem Rühren mit dem Begasungsrührer mit 1500 min-1
auf 80 bzw. 100°C temperiert. Nach Erreichen der Solltemperatur wurde der Druck
auf 47 bar (17 bar) erhöht und das Olefingemisch aus der Druckpipette mit einem
Druck von 55 bar (25 bar) in den Reaktor gepreßt. Es stellte sich ein Anfangsdruck
der Reaktion von 49.6 bar (19.2 bar) ein. Nach sofortiger manueller Regulierung auf
50 bar (20 bar) wurde der Bypass geschlossen, und der Druck über die gesamte
Reaktionszeit mit dem Nachdruckregler konstant gehalten. Der Versuch wurde unter
Zwangskühlung nach Ablauf der festgelegten Reaktionszeit beendet. Die
Reaktionslösung wurde unter Schutzgas entnommen und gaschromatografisch
analysiert.The test was carried out after filling under protective gas in a 200 ml stainless steel autoclave from Buddeberg, Mannheim, equipped with a gassing stirrer, pressure pipette and holding pressure regulator, in an oil bath thermostat. To minimize the influence of moisture and oxygen, the toluene used as solvent was dried with sodium ketyl and distilled under argon. The 1-octene used as substrate was refluxed over sodium for several hours and distilled under argon.
The autoclave was charged with 27 ml of toluene, in which 5,456 mg = 0.0176 mmol [acacRh (COD)] and 0.088 mmol of the respective ligand were dissolved. The molar ratio Rh / P was 1:10. 24 ml = approx. 16.8 g (149.3 mmol) of 1-octene were added to the pressure pipette above the reactor. The ratio Rh / 1-octene was therefore approx. 1: 8500.Reactor and pressure pipette were connected via a bypass connected in parallel with the pressure control system at a target pressure of 50 bar with 33 bar, at a target pressure of 20 bar with 13 bar CO / H 2 ( 1: 1; synthesis gas) and the reactor contents are heated to 80 or 100 ° C. at 1500 min −1 with magnetic stirring using a gassing stirrer. After the target temperature had been reached, the pressure was increased to 47 bar (17 bar) and the olefin mixture was forced into the reactor from the pressure pipette at a pressure of 55 bar (25 bar). An initial reaction pressure of 49.6 bar (19.2 bar) was established. After immediate manual regulation to 50 bar (20 bar), the bypass was closed and the pressure was kept constant over the entire reaction time with the holding pressure regulator. The experiment was terminated with forced cooling after the specified reaction time. The reaction solution was removed under protective gas and analyzed by gas chromatography.
Die nachfolgende Tabelle enthält die mit den einzelnen Liganden erhaltenen
Ergebnisse.
Die Versuchsdurchführung erfolgte nach Befüllen unter Schutzgas in einem mit
Begasungsrührer, Druckpipette und Nachdruckregler ausgestatteten 200 ml-Edelstahlautoklav
der Fa. Buddeberg, Mannheim, im Ölbadthermostaten. Zur
Minimierung eines Einflusses von Feuchtigkeit und Sauerstoff wurde das als
Solvens benutzte Toluol mit Natrium-Ketyl getrocknet und unter Argon destilliert.
Das als Substrat eingesetzte Octenisomerengemisch wurde mehrere Stunden über
Natrium am Rückfluß erhitzt und unter Argon destilliert. Zusammensetzung: 1-Octen,
3.3 %; cis+trans-2-Octen, 48.5 %; cis+trans-3-Octen, 29.2%; cis+trans-Octen-4, 16.4
%; verzweigte C8-Olefine, 2.6 %.
Der Autoklav wurde beschickt mit 41 ml Toluol, in welchem 18.75 mg= 0.0604 mmol
[acacRh(COD)], der jeweilige Bidentatligand und ggf. der nachfolgend abgebildete
Coligand gelöst waren. Das Verhältnis Rh/Bidentatligand (Ligand)/Etherphosphonit
(Coligand) ist in der Tabelle angegeben. In die Druckpipette über dem Reaktor gab
man 15 ml = 10.62 g (94.63 mmol) Octene. Das Verhältnis Rh/Octene betrug damit
ca. 1: 1570. Reaktor und Druckpipette wurden über einen der Druckregelstrecke
parallel geschalteten Bypass mit 13 bar CO/H2 (1:1; Synthesegas) beaufschlagt und
der Reaktorinhalt unter magnetischem Rühren mit dem Begasungsrührer mit 1500
min-1 auf 130 °C temperiert. Nach Erreichen der Solltemperatur wurde der Druck auf
17 bar erhöht, und das Olefingemisch aus der Druckpipette mit einem Druck von 25
bar in den Reaktor gepreßt. Es stellte sich ein Anfangsdruck der Reaktion von 19.2
bar ein. Nach sofortiger manueller Regulierung auf 20 bar wurde der Bypass
geschlossen, und der Druck über die gesamte Reaktionszeit mit dem
Nachdruckregler konstant gehalten. Der Versuch wurde unter Zwangskühlung nach
drei Stunden beendet. Die Reaktionslösung wurde unter Schutzgas entnommen und
gaschromatografisch analysiert.The test was carried out after filling under protective gas in a 200 ml stainless steel autoclave from Buddeberg, Mannheim, equipped with a gassing stirrer, pressure pipette and holding pressure regulator, in an oil bath thermostat. To minimize the influence of moisture and oxygen, the toluene used as solvent was dried with sodium ketyl and distilled under argon. The octene isomer mixture used as the substrate was refluxed for several hours over sodium and distilled under argon. Composition: 1-octene, 3.3%; cis + trans-2 octene, 48.5%; cis + trans -3-octene, 29.2%; cis + trans -octen-4, 16.4%; branched C8 olefins, 2.6%.
The autoclave was charged with 41 ml of toluene in which 18.75 mg = 0.0604 mmol [acacRh (COD)], the respective bidentate ligand and possibly the coligand shown below were dissolved. The ratio Rh / bidentate ligand (ligand) / ether phosphonite (coligand) is shown in the table. 15 ml = 10.62 g (94.63 mmol) of octenes were added to the pressure pipette above the reactor. The ratio Rh / octene was thus about 1: 1570.Reactor and pressure pipette were charged with 13 bar CO / H 2 (1: 1; synthesis gas) via a bypass connected in parallel with the pressure control system, and the reactor contents with magnetic stirring with the gassing stirrer at 1500 min -1 tempered to 130 ° C. After reaching the desired temperature, the pressure was increased to 17 bar, and the olefin mixture from the pressure pipette was pressed into the reactor at a pressure of 25 bar. An initial pressure of the reaction of 19.2 bar was established. After immediate manual regulation to 20 bar, the bypass was closed and the pressure was kept constant over the entire reaction time with the holding pressure regulator. The experiment was terminated after three hours with forced cooling. The reaction solution was removed under protective gas and analyzed by gas chromatography.
Als Coligand wurde eingesetzt:
Die nachfolgende Tabelle enthält die mit den einzelnen Liganden erhaltenen
Ergebnisse.
Die Versuchdurchführung erfolgte analog zu den Beispielen 9-19 mit 15 ml = 10.70 g
(95.34 mmol) einer Mischung von doppelbindungs- und gerüstisomeren Octenen,
die durch Dimerisierung von n-Butenen erhalten wurden. Die nachfolgende Tabelle
enthält sowohl Ergebnisse, die mit reinen Bidentatliganden, als auch unter
Anwendung einer Mischung von Bidentatligand/Coligand CL-1 erhalten wurden.
Claims (17)
dadurch gekennzeichnet, dass W und X aliphatische, alicyclische, aliphatisch-alicyclische, heterocyclische, aliphatisch-heterocyclische, aromatische, aromatisch-aromatische, aliphatisch-aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen, mit einer kovalenten Verknüpfung gemäß Formel V
characterized in that W and X are aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic, aliphatic-aromatic hydrocarbon radicals having 1 to 50 carbon atoms, with a covalent linkage according to formula V.
dadurch gekennzeichnet, dass W und X aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen mit kovalenten Verknüpfungen gemäß Formel VI
characterized in that W and X are aromatic hydrocarbon radicals having 1 to 50 carbon atoms with covalent linkages according to formula VI
dadurch gekennzeichnet, dass W und X aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen mit einer kovalenten Verknüpfung gemäß Formel VII
characterized in that W and X are aromatic hydrocarbon radicals having 1 to 50 carbon atoms with a covalent linkage according to formula VII
dadurch gekennzeichnet, dass das Q ein Kohlenwasserstoffrest gemäß Formel VIII
wobei die Positionen a und b als Anknüpfpunkte dienen.
characterized in that the Q is a hydrocarbon radical according to formula VIII
positions a and b serve as connecting points.
dadurch gekennzeichnet, dass W und X aliphatische, alicyclische, aliphatisch-alicyclische, heterocyclische, aliphatisch-heterocyclische, aromatische, aromatisch-aromatische, aliphatisch-aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen, mit einer kovalenten Verknüpfung gemäß Formel V
characterized in that W and X are aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic, aliphatic-aromatic hydrocarbon radicals having 1 to 50 carbon atoms, with a covalent linkage according to formula V.
dadurch gekennzeichnet, dass W und X aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen mit kovalenten Verknüpfungen gemäß Formel VI
characterized in that W and X are aromatic hydrocarbon radicals having 1 to 50 carbon atoms with covalent linkages according to formula VI
dadurch gekennzeichnet, dass W und X aromatische Kohlenwasserstoffreste mit 1 bis 50 Kohlenstoffatomen mit einer kovalenten Verknüpfung gemäß Formel VII
characterized in that W and X are aromatic hydrocarbon radicals having 1 to 50 carbon atoms with a covalent linkage according to formula VII
dadurch gekennzeichnet, dass das Q ein Kohlenwasserstoffrest gemäß Formel VIII
characterized in that the Q is a hydrocarbon radical according to formula VIII
dadurch gekennzeichnet, dass als Metall Rhodium, Platin, Kobalt oder Ruthenium eingesetzt wird.Bisphosphite metal complex according to one of claims 7 to 12,
characterized in that rhodium, platinum, cobalt or ruthenium is used as the metal.
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| DE10053272 | 2000-10-27 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20020033058A (en) | 2002-05-04 |
| EP1201675B1 (en) | 2004-01-21 |
| ES2211710T3 (en) | 2004-07-16 |
| JP4141129B2 (en) | 2008-08-27 |
| US20020111487A1 (en) | 2002-08-15 |
| KR100732352B1 (en) | 2007-06-27 |
| JP2002193987A (en) | 2002-07-10 |
| US6570033B2 (en) | 2003-05-27 |
| ATE258183T1 (en) | 2004-02-15 |
| DE10053272A1 (en) | 2002-05-08 |
| DE50101350D1 (en) | 2004-02-26 |
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